Denial-of-Service Vulnerability in libsoup HTTP Library by GNOME
CVE-2025-4948

7.5HIGH

Key Information:

Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 7 Extended Lifecycle Support
Red Hat Enterprise Linux 8
Vendor
CVE Published:
19 May 2025

What is CVE-2025-4948?

A vulnerability exists in the libsoup HTTP library's soup_multipart_new_from_message() function, utilized by GNOME and other applications for handling web communications. This flaw arises from improper validation when processing specially crafted multipart messages. The resulting integer underflow can lead to invalid memory access, causing affected applications or servers to crash unexpectedly. Thus, any application relying on libsoup is at risk of experiencing a denial-of-service, which may disrupt service availability and user access.

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References

https://access.redhat.com/errata/RHSA-2025:21657
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:8126
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:8128
vendor-advisoryx_refsource_REDHAT

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank fouzhe and zkbytes for reporting this issue.
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